<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>5xx-error</title>
<style>
.welcome{
	position:absolute;
	top:40%;
	left:50%;
	-moz-transform:translate(-50%,-50%);
	transform:translate(-50%,-50%);
	width: 300px;
	height: 240px;
}
</style>
</head>
<body>
<img class="welcome" src="../images/500.png"/>
<script type="text/javascript">
	alert("web服务器或数据库服务器连接失败，请联系管理员...");
</script>
</body>
</html>